Frankstown Branch Juniata River at Williamsburg, Blair County PA (WIBP1)
Gage Location: Blair County, PennsylvaniaSite Location: Blair County, Pennsylvania
Latitude: 40.463Longitude: -78.2Elevation: 831.78 ft. MSLDrainage Area: 291 Sq. Mi.
Minor Stage: 12 ft. Moderate Stage: 13 ft.Major Stage: 15 ft.
First Flood: 1889-06-01Last Flood: 2011-09-10 Crest: 12.16 ft.Datum change: 1928-08-14Number of Floods: 44

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Height Above Flood Stage for Entire Period of Record
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
12 ft to 13 ft1636.412 ft or above 44100.0
13 ft to 14 ft1431.813 ft or above 2863.6
14 ft to 15 ft49.114 ft or above 1431.8
15 ft to 16 ft24.515 ft or above 1022.7
16 ft to 17 ft24.516 ft or above 818.2
17 ft to 18 ft12.317 ft or above 613.6
18 ft to 19 ft24.518 ft or above 511.4
19 ft to 20 ft36.819 ft or above 36.8
Height Above Flood Stage After Datum Change
Height Above FSTotal OccurencePercent of Crest OccurrenceCumulative Total Flood OccurrencePercent of Floods above Listed Value
12 ft to 13 ft1434.112 ft or above 41100.0
13 ft to 14 ft1434.113 ft or above 2765.9
14 ft to 15 ft49.814 ft or above 1331.7
15 ft to 16 ft24.915 ft or above 922.0
16 ft to 17 ft24.916 ft or above 717.1
17 ft to 18 ft12.417 ft or above 512.2
18 ft to 19 ft24.918 ft or above 49.8
19 ft to 20 ft24.919 ft or above 24.9